Light-flavour identified charged-hadron production in pp and Pb_Pb collisions at the LHC

International Workshop on Discovery Physics at the LHC 2012

Preghenella, Roberto^1

Centro Studi e Ricerche e Museo Storico della Fisica Enrico Fermi, Italy Sezione INFN, Rome, Bologna, Italy^1

关键词: Collision energies;    High energy heavy-ion collision;    Hydrodynamic model;    Integrated production;    Nuclear modification factors;    Particle identifications;    Ring imaging Cherenkov;    Transverse momenta;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/455/1/012009/pdf
DOI  :  10.1088/1742-6596/455/1/012009

来源: IOP

【 摘 要 】

Thanks to the unique detector design adopted to fulfill tracking and particle-identification (PID) requirements (e.g. low momentum cut-off and low material budget), the ALICE experiment provides significant information about hadron production both in pp and Pb-Pb collisions. In particular, the pT-differential and integrated production yields of identified particles play a key role in the study of the collective and thermal properties of the matter formed in high-energy heavy-ion collisions. Furthermore, the production of high-pT particles provides insights into the property of the hot medium created in such collisions and the in-medium energy-loss mechanisms. Transverse momentum spectra of π±, K±, p and are measured at mid-rapidity (|y| AA) of identified hadrons will also be discussed and compared to unidentified charged particles and theoretical predictions. This is observed to be identical for all particle species at high-pT.